Question 1

In this diagram which structure is the conus medullaris?

Accepted Answer

A) E 
B) F 
C) G 
D) H 
E) I 
A) E 
B) F 
C) G 
D) H 
E) I A

Question 2

Which type of descending motor pathway excites antigravity muscles in order to exert control over postural changes necessary to compensate for tilts and movements of the body.?

Accepted Answer

A) vestibulospinal tract 
B) corticospinal tract 
C) corticobulbar tract 
D) spinothalamic tract 
E) gracile fasciculus 
A) vestibulospinal tract 
B) corticospinal tract 
C) corticobulbar tract 
D) spinothalamic tract 
E) gracile fasciculus A

Question 3

Which structure listed contains cerebrospinal fluid?

Accepted Answer

A) epidural space 
B) subarachnoid space 
C) subdural space 
D) foramen magnum 
E) posterior median sulcus 
A) epidural space 
B) subarachnoid space 
C) subdural space 
D) foramen magnum 
E) posterior median sulcus B

Question 4

In this diagram,where would the axons of unipolar neurons be located?

Accepted Answer

A) B 
B) C 
C) D 
D) E 
A) B 
B) C 
C) D 
D) E

Question 5

A severed obturator nerve will lead into paralysis of which region of the body?

Accepted Answer

A) Cervical 
B) Thoracic 
C) Lumbar 
D) Thigh 
E) Arms 
A) Cervical 
B) Thoracic 
C) Lumbar 
D) Thigh 
E) Arms

Question 6

In this diagram which portion of the spinal cord contains cell bodies and axons of interneurons as well as incoming axons of sensory neurons?

Accepted Answer

A) B 
B) C 
C) D 
D) H 
E) I 
A) B 
B) C 
C) D 
D) H 
E) I

Question 7

Christopher Reeve,a famous actor and competitive equestrian,suffered fractures to the top two vertebra and could not breathe without the help of a respirator.Which of the nerves in this diagram were likely damaged?

Accepted Answer

A) A 
B) C 
C) D 
D) E 
E) G 
A) A 
B) C 
C) D 
D) E 
E) G

Question 8

Describe the gross external anatomy of the spinal cord.

Accepted Answer

The spinal cord is roughly cylindrical,b

Question 9

Which of the following parts of a reflex arc would be represented by the contraction of the gastrocnemius muscle or the radial iris muscles?

Accepted Answer

A) Sensory receptor 
B) Sensory neuron 
C) Motor neuron 
D) Effector 
E) Integrating center 
A) Sensory receptor 
B) Sensory neuron 
C) Motor neuron 
D) Effector 
E) Integrating center

Question 10

Which plexus arises from the structure labeled B in the diagram?

Accepted Answer

A) cervical plexus 
B) brachial plexus 
C) thoracic nerves 
D) lumbar plexus 
E) sacral plexus 
A) cervical plexus 
B) brachial plexus 
C) thoracic nerves 
D) lumbar plexus 
E) sacral plexus

Question 11

Spinal nerves
1)Are part of the PNS.
2)connect the CNS to sensory receptors and effectors in all parts of the body.
3)are named according to the region of the vertebral column from which they emerge.
4)are mixed nerves.
5)only transmit sensory information.
6)only transmit motor information.

Accepted Answer

A) 1,2,3 
B) 1,2,3,4. 
C) 1,3,6 
D) 1 and 3 
E) 1,2,3,4 
A) 1,2,3 
B) 1,2,3,4. 
C) 1,3,6 
D) 1 and 3 
E) 1,2,3,4

Question 12

In an episiotomy,a surgical cut at the opening of the vagina,during childbirth,anesthetization to the [___] nerve may occur.
Answer options
femoral
obturator
perforating cutaneous
pudendal
sciatic

Accepted Answer

The answer of In an episiotomy,a surgical cut at the...

Question 13

A pupillary reflex is integrated in the brain stem so it is classified as a ________reflex.The smooth muscle of the iris is the effector,so this is classified as a(n)___________.

Accepted Answer

A) Spinal;somatic 
B) Spinal;autonomic 
C) Cranial;somatic 
D) Cranial;autonomic 
E) Spinal;visceral 
A) Spinal;somatic 
B) Spinal;autonomic 
C) Cranial;somatic 
D) Cranial;autonomic 
E) Spinal;visceral

Question 14

Why is a spinal tap performed below L2 of the spinal cord?

Accepted Answer

A) The spinal cord is present ensuring there will be a subarachnoid space present. 
B) The spinal meninges and spinal cord are not present,ensuring no damage to the nervous system. 
C) The spinal meninges and spaces extend passed the proper spinal cord,allowing fluid to be withdrawn with a minimal risk of damage to the spinal cord. 
D) There is more space between the vertebrae in a flexed position below L2. 
E) The supracristal line is the only way to determine placement of the needle in spinal taps. 
A) The spinal cord is present ensuring there will be a subarachnoid space present. 
B) The spinal meninges and spinal cord are not present,ensuring no damage to the nervous system. 
C) The spinal meninges and spaces extend passed the proper spinal cord,allowing fluid to be withdrawn with a minimal risk of damage to the spinal cord. 
D) There is more space between the vertebrae in a flexed position below L2. 
E) The supracristal line is the only way to determine placement of the needle in spinal taps.

Question 15

Which of the labeled structures would receive injections to cause loss of sensation to control pain in childbirth?

Accepted Answer

A) B 
B) C 
C) F 
D) G 
E) H 
A) B 
B) C 
C) F 
D) G 
E) H

Question 16

An individual with shingles presents with pain and lesions in the mouth,ears,and pharynx.Which dermatomal region would be sending the afferent signals?

Accepted Answer

A) C2 
B) C3 
C) C1 
D) trigeminal 
E) facial 
A) C2 
B) C3 
C) C1 
D) trigeminal 
E) facial

Question 17

Which nerve innervates the muscle that abducts the arm at the shoulder and the skin overlying the deltoid?

Accepted Answer

A) phrenic nerve 
B) axillary nerve 
C) intercostal nerve 
D) ulnar nerve 
E) common fibular nerve 
A) phrenic nerve 
B) axillary nerve 
C) intercostal nerve 
D) ulnar nerve 
E) common fibular nerve

Question 18

The largest nerve in the lumbar plexus is the [___].
common fibular
femoral nerve
obturator nerve
sciatic nerve
tibial nerve

Accepted Answer

The answer of The largest nerve in the lumbar plexus...

Question 19

Which region of the spinal cord allows a dancer to be aware of their movements and body position?

Accepted Answer

A) Posterior white column 
B) Anterior gray horn 
C) Anterior white column 
D) Lateral white column 
E) Gray commissure 
A) Posterior white column 
B) Anterior gray horn 
C) Anterior white column 
D) Lateral white column 
E) Gray commissure

Question 20

Sensory information travels to the brain via

Accepted Answer

A) Ascending tracts 
B) Descending tracts 
C) Integration tracts 
D) Anterior roots 
E) Direct motor pathways 
A) Ascending tracts 
B) Descending tracts 
C) Integration tracts 
D) Anterior roots 
E) Direct motor pathways

Exam 13: The Spinal Cord and Spinal Nerves

In this diagram which structure is the conus medullaris?

Which type of descending motor pathway excites antigravity muscles in order to exert control over postural changes necessary to compensate for tilts and movements of the body.?

Which structure listed contains cerebrospinal fluid?

In this diagram,where would the axons of unipolar neurons be located?

A severed obturator nerve will lead into paralysis of which region of the body?

In this diagram which portion of the spinal cord contains cell bodies and axons of interneurons as well as incoming axons of sensory neurons?

Christopher Reeve,a famous actor and competitive equestrian,suffered fractures to the top two vertebra and could not breathe without the help of a respirator.Which of the nerves in this diagram were likely damaged?

Describe the gross external anatomy of the spinal cord.

Which of the following parts of a reflex arc would be represented by the contraction of the gastrocnemius muscle or the radial iris muscles?

Which plexus arises from the structure labeled B in the diagram?

Spinal nerves 1)Are part of the PNS. 2)connect the CNS to sensory receptors and effectors in all parts of the body. 3)are named according to the region of the vertebral column from which they emerge. 4)are mixed nerves. 5)only transmit sensory information. 6)only transmit motor information.

In an episiotomy,a surgical cut at the opening of the vagina,during childbirth,anesthetization to the [___] nerve may occur. Answer options femoral obturator perforating cutaneous pudendal sciatic

A pupillary reflex is integrated in the brain stem so it is classified as a ________reflex.The smooth muscle of the iris is the effector,so this is classified as a(n)___________.

Why is a spinal tap performed below L2 of the spinal cord?

Which of the labeled structures would receive injections to cause loss of sensation to control pain in childbirth?

An individual with shingles presents with pain and lesions in the mouth,ears,and pharynx.Which dermatomal region would be sending the afferent signals?

Which nerve innervates the muscle that abducts the arm at the shoulder and the skin overlying the deltoid?

The largest nerve in the lumbar plexus is the [___]. common fibular femoral nerve obturator nerve sciatic nerve tibial nerve

Which region of the spinal cord allows a dancer to be aware of their movements and body position?

Sensory information travels to the brain via

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters

A pupillary reflex is integrated in the brain stem so it is classified as a reflex.The smooth muscle of the iris is the effector,so this is classified as a(n)___.